Process of dyeing.



CHARLES GOLDSTEIN, OF NEW YORK, N. Y.

PROCESS OF DYEING.

No Drawing.

- Specification of Letters Patent. Application filed October 25, 1912. Serial No. 727,711.

Patented Dec. 30, 1913.

To all whom it may concern Be it known that 1, CHARLES GOLDSTEIN,

a citizen ofthe-United States, residing at to be used for dyeing an American or foreign red fox intoa Sitka or Alaskan fox or into a natural black fox, of which the following is a specification.

In carrying out my invention, I first dissolve ha-lf'a pound of ferrous sulfate in a gallon of boiling water and cool the same to 102 degrees Fahrenheit. This is m preliminary solution. I also prepare a yeing solution as followsz'first, boil four ounces of roasted and ground nut gall for half an hour in one gallon'of water; then boil the same with four ounces of sumac added, for another half hour, then cool to 102 degrees Fahrenheit and add an ounce of lime water for the purpose of neutralizing any free acid in the ferrous Sulfate and to act as a mordant on the skin. The fox skin is thoroughly washed and left for 24 hours in the preliminary solution above mentioned at 102 degrees Fahrenheit. It is then hung up to drip for 24 hours. It is then placed in the above dyeing solution at 102 degrees Fahrenheit. It so remains for twelve, 12, hours, when the temperature is lowered to 100 degrees Fahrenheit and the skin remains immersed for 12 hours longer. The skin is then hung up to dry and is afterward finished.

This process will dye an American or foreign fox skin of any ordinary kind into a black fox skin of natural appearance, not

jet black or artificially glossy, It does not jeopardize the health of any one engaged in the Work, because no injurious gases are emitted. Also, there'are no offensive odors.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. The process of dyeing furs consisting in the following steps: first, immersing the same in a prelimina aqueous solution of ferrous sulfate second y, immersing the same in an aqueous dyeing solution of nut galls, sumac and lime, the skin being hung up and allowed to drip after each immersionhand finally finished.

2. The process of dyeing furs consisting in first immersing them for 24 hours in a preliminary aqueous solution of ferroussulfate at a temperature of 102 degrees Fahrenheit and hanging them up to drip for 24: hours; then immersing them for twelve hours at the same temperature in an aqueous dyeing solution prepared by boiling ground and roasted nut-galls in water in about the proportions stated for 'half an hour, subsequently boiling the same with the addition of four ounces of sumac 'for another half hour and afterward cooling and adding an ounce of lime water; then lowering the temperature of the dyeing solution to 100 degrees Fahrenheit and permitting the skins to remain immersed therein for another 12 hours, then hanging them up .to dry and finishing them.

CHARLES 'GOLDSTEIN. Witnesses:

EDWARD K. Orr, Josnrrr A. HAHN. 

